How to replace bad car thermostat in 6 easy steps
Jun 12, · Place the thermostat into the engine. The deeper spring-side end goes into the engine, while the shorter end sits in the housing. If there is a tab, it goes through a slot in the thermostat flange. If the thermostat doesn't sit flat, it's incorrectly installed. Nov 09, · Install the New Thermostat Compare the new thermostat to the old one. Then, position the new one in place along with its seal, and tighten the housing bolts using a torque wrench. Look for a marking on the thermostat indicating which end should face the datlovesdat.com: Dan Ferrell.
You'll get a rough estimate for your vehicle and we'll get your car repaired urgently. The thermostat is one of the more important components uow an automobile. Think of the cooling how to properly install a car thermostat as two parts; the engine assembly and the radiator, with coolant circulating between the two. The thermostat is a valve between the two that closes to allow the engine to heat up to running temperature, and then opens to allow the coolant to circulate.
The engine assembly generates heat, and the coolant carries that heat to the radiator where it is shed. Engines run best at a certain cra when they are cold, they run very poorly and if they get too hot, problems arise. Various sensors and heat management strategies are employed but at the core is the thermostat.
It holds coolant in the engine until operating temperature is achieved; then, it opens and allows coolant to circulate to the radiator and maintain that temperature. On many modern vehicles a trouble code will be set and the check engine light will turn on if the coolant temperatures indicate a thermostat problem. Usually the thermostat is located where the upper radiator hose meets the engine assembly and most of the time though not alwaysit is fairly accessible.
It can be less if combined with other services. As far as car thermostat service cost savings, sometimes, the most economical time to replace a thermostat is before it fails. However, if an engine or cooling system is being serviced for properlg reasons, then, installing a new thermostat during related work can be good preventative and inexpensive maintenance. A general rule is to replace the thermostat if the what does the bible say about negative people has overheated regardless of causeand to replace the how to check your followers on instagram on computer if it is in any way suspected of having a problem.
Given that ho the thermostat involves draining about a gallon of coolant, the most common service that goes along with thermostat replacement is a cooling system flush. With the system open and partially drained, it is fairly easy to complete.
If the cooling system in any way indicates a need for a general scheduled service, it will probably be recommended. Many modern cooling systems are complex internally and prone to trapping air. In many cases, normal service procedures require the system to be purged of air with a vacuum device after draining. In the worst cases, a car may continue to run insgall until it is fully purged. The thermostat is easily damaged or rendered unreliable by an overheating event.
Sometimes, a thermostat can be diagnosed and replaced. Once it is working, another underlying cause for engine overheating is found.
After replacement, attention should be paid to the engine temperature and other components to verify that everything is working as it should. A thermostat is basically a valve operated by a rod and the rod is set in a cylinder filled with wax.
When how to properly install a car thermostat temperature of the cylinder reaches a certain point to degrees typicallythe wax melts and expands; pushing the rod up and opening the valve. Mechanical failures are possible as deposits sometimes build up and prevent the valve from closing fully.
The rod can also migrate from a centered position with wear and fail to fully open or close, or it can stick in one position. Another type of failure that can result from overheating is if the wax expands and over-pressurizes the cylinder it resides in due to excessive temperatures and the liquid wax then leaks past its seals.
It is fairly easy to test a thermostat by placing it in water that is being brought to boil. By measuring the temperature of the water at the point where the valve opens and comparing that to intall desired engine operating temperature, the valve can be verified as operational or not.
In practice, this is very seldom done. Most thermostats are much cheaper than the cost of the labor time involved in bench testing them. The normal recommendation, if one is suspect, is to replace it almost as a maintenance item. It can last the instakl of the vehicle, but can also be damaged by overheating or by corrosion or contamination in the cooling system.
Being an inexpensive part with a critical function, the thermostat is typically replaced whenever it is suspected of having a problem. The engine will typically run well below its optimal how to properly install a car thermostat, which can foul spark plugs, cause carbon build-up, and clog the how to properly install a car thermostat converters.
If the engine runs too hot or too cold, or takes too long to warm up, those are possible signs. Many newer vehicles will also set an engine light if sensors indicate a thermostat thefmostat not operating properly.
Notify me of follow-up comments by email. Notify me of new posts by email. Car What is a body paragraph in an essay Replacement Cost Guide. Book Car Service Appointment. How long does a thermostat last? When should I replace the thermostat? Can I drive without a thermostat?
How do I know if I need a thermostat? About Author. Daniel Rey. Thermostt has worked for 33 years now in the automotive field, as an ASE Master Technician for independent shops and dealerships, as a Certified Chrysler Technician, as a warranty claims adjuster for General Motors.
More Posts. Pinion Seal Replacement Cost Guide.
Other Things That May Come Up
Ever wondered how to save a trip to your mechanic and save some money? Here's an in-depth explanation of how to install your own thermostat for older vehicle. May 05, · Put the thermostat in the engine flange so the valve points up. Inspect your new thermostat to find the pointed valve on top and the spring on the bottom. Slide the thermostat into the port on your engine and push it in tightly. Make sure the thermostat’s ring fits perfectly in the port, or else coolant will be able to leak through%(1). If the parts store gave you a plain gasket, coat one side with RTV sealant (self-adhesive gaskets don’t need sealant). Then install the T-stat and gasket (Photo 3). If the old T-stat used a rubber O-ring instead of a gasket, lubricate the new one with fresh coolant before you insert it. Reinstall the gooseneck .
Last Updated: May 26, References. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. There are 21 references cited in this article, which can be found at the bottom of the page. This article has been viewed 1, times. Learn more Luckily, it only takes a few minutes to change one using a couple of tools.
Variation: Your vehicle may have a clear plastic reservoir near the back corner of the engine bay that stores additional coolant.
You can unscrew the reservoir cap instead of the radiator cap. Warning: Vehicle coolant is toxic and can give off harmful vapors, so be sure to work in a well-ventilated area.
Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue.
Wait for the engine to cool down if you drove recently. As you drive your vehicle, the coolant running through the engine heats up and could cause severe burns. Before you make your repairs, give your vehicle 30—60 minutes so it can cool off.
To check the temperature, open the hood and lightly touch your engine to see if it feels hot. Try leaving the hood open to help your engine cool off faster. Take the cap off of your radiator. Locate your radiator, which is a long black box under your hood and in the front of your engine bay directly behind the grille.
Look for a circular cap on top of the radiator and turn it counterclockwise to loosen it. The radiator may have built-up pressure, which could spray hot coolant when you open the cap. If you notice coolant leaking out from the radiator cap before you unscrew it, buy a replacement.
Look underneath your vehicle at the bottom of the radiator and look for a small plastic wingnut or plug. Turn the drain plug on your radiator counterclockwise until you see a steady stream of coolant pour into the drip pan. Check the levels of the coolant by looking into the radiator.
You only need to remove enough coolant to expose the thermostat, so once half of the coolant flows out from the plug, turn it clockwise to tighten it again. Save the coolant you drained since you can keep using it. If your coolant is filled with dirt or floating debris, you may need to flush your radiator to clean it. Unbolt the thermostat housing from the engine block with a ratchet.
Where the hose connects to the engine will be the housing for the thermostat. Once you loosen the bolts, you can easily lift the housing up to detach it from the engine. If the housing has dents or pitting, you should also replace it. Pull the old thermostat out with a pair of pliers. Check the port on your engine where you removed the housing to locate the thermostat, which looks like a cylinder with a metal ring around the outside and a pointed valve on top. Grip the top of the thermostat with the pliers and pull it straight out.
If the thermostat feels stuck, try twisting it as you pull it out. Part 2 of Get a replacement thermostat and gasket with the same heat rating. Look at an automotive store for a thermostat that lists the same opening temperature, or else your vehicle may not operate properly.
Remove any residue from the housing and engine flanges with a scraper. Hold your scraper against the housing flange at a degree angle. Use light pressure to scrape off the residue that was leftover from the old gasket. Then scrape the flange on the engine.
Avoid being too forceful with your scraper since the thermostat housing is usually made from aluminum and can easily get damaged or dented. Put the thermostat in the engine flange so the valve points up. Inspect your new thermostat to find the pointed valve on top and the spring on the bottom. Slide the thermostat into the port on your engine and push it in tightly. Line the new thermostat gasket up on the flange. Bolt the housing back onto the engine. Set the housing on top of the gasket so the bolt holes line up.
Then use your ratchet to tighten the bolts until you feel resistance. Look up the torque specifications for your make and model of vehicle and only tighten the bolts by that amount.
Part 3 of Pour coolant into the reservoir up to the fill line. Locate the plastic coolant reservoir near the side or back corner of the engine bay. Open the cap and pour in the coolant you originally drained into the drip pan. If the coolant was dirty, then look up the coolant specifications for your vehicle and get a new bottle in the right color. Screw on the radiator cap to seal it. Press the radiator cap back onto the opening on top of your radiator.
Leave the engine to idle for 5—10 minutes so the engine can warm up and activate your thermostat. As the engine runs, look at the thermostat housing to see if there are any leaks. After that, turn off your vehicle.
If the gauge still goes into the red zone, then there may be a leak or you've installed the thermostat improperly. Top off your coolant once your engine cools down again. Since the coolant will run into your engine and radiator, the levels may go down. Open the cap on the reservoir and check the coolant levels to see if you need to add more. Include your email address to get a message when this question is answered. Helpful 0 Not Helpful 0. Always wait for your engine to cool down before you start working, or else you could get severe burns from the parts or the coolant.
Never drive your vehicle without the thermostat since your engine could easily overheat. Vehicle coolant is toxic if ingested and can release harmful vapors. Related wikiHows How to. How to. More References About This Article. Co-authored by:. Co-authors: 2. Updated: May 26, Categories: Car Maintenance and Repair. Thanks to all authors for creating a page that has been read 1, times.
<- What does the spanish word jefe mean - How to turn off parental controls on a computer->